1 /*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "testobserverstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #include "test_observer_stub.h"
23 #include "test_observer.h"
24 #undef private
25
26 #include "ability_record.h"
27
28 using namespace OHOS::AAFwk;
29 using namespace OHOS::AppExecFwk;
30
31 namespace OHOS {
32 namespace {
33 constexpr int INPUT_ZERO = 0;
34 constexpr int INPUT_ONE = 1;
35 constexpr int INPUT_TWO = 2;
36 constexpr int INPUT_THREE = 3;
37 constexpr size_t U32_AT_SIZE = 4;
38 constexpr size_t OFFSET_ZERO = 24;
39 constexpr size_t OFFSET_ONE = 16;
40 constexpr size_t OFFSET_TWO = 8;
41 constexpr uint8_t ENABLE = 2;
42 } // namespace
43
44 const std::u16string APPMGR_INTERFACE_TOKEN = u"ohos.aafwk.AppManager";
GetU32Data(const char * ptr)45 uint32_t GetU32Data(const char* ptr)
46 {
47 // convert fuzz input data to an integer
48 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
49 ptr[INPUT_THREE];
50 }
51
DoSomethingInterestingWithMyAPI(const char * data,size_t size)52 bool DoSomethingInterestingWithMyAPI(const char *data, size_t size)
53 {
54 auto testObserverStub = std::make_shared<TestObserver>();
55 MessageParcel ParcelData;
56 ParcelData.WriteInterfaceToken(APPMGR_INTERFACE_TOKEN);
57 ParcelData.WriteBuffer(data, size);
58 ParcelData.RewindRead(0);
59 MessageParcel reply;
60 MessageOption option;
61 uint32_t code = static_cast<uint32_t>(GetU32Data(data));
62 testObserverStub->OnRemoteRequest(code, ParcelData, reply, option);
63
64 return true;
65 }
66 } // namespace OHOS
67
68 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)69 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
70 {
71 /* Run your code on data */
72 if (data == nullptr) {
73 std::cout << "invalid data" << std::endl;
74 return 0;
75 }
76
77 /* Validate the length of size */
78 if (size < OHOS::U32_AT_SIZE) {
79 return 0;
80 }
81
82 char *ch = static_cast<char*>(malloc(size + 1));
83 if (ch == nullptr) {
84 std::cout << "malloc failed." << std::endl;
85 return 0;
86 }
87
88 (void)memset_s(ch, size + 1, 0x00, size + 1);
89 if (memcpy_s(ch, size + 1, data, size) != EOK) {
90 std::cout << "copy failed." << std::endl;
91 free(ch);
92 ch = nullptr;
93 return 0;
94 }
95
96 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
97 free(ch);
98 ch = nullptr;
99 return 0;
100 }